Mottingham is a district of south-east London, England, which straddles the border of both the London Borough of Bromley and the Royal Borough of Greenwich. It is located south west of Eltham, 1.5 miles. It was historically within the county of Kent.

The London Borough of Bromley is a borough in London, England. It borders the county of Kent, of which it formed part of until 1965. The borough's population in the 2021 census was 329,991. It is named after Bromley, its principal district. Other districts are Penge, Hayes, West Wickham, Chislehurst, Beckenham and Orpington. The local authority is Bromley London Borough Council.